- Reducing Vibratory Screen Structural Loading Using a
2001年1月1日 With this work, the use of a liquid inertia tuned vibration absorber to reduce the structural input loading without significantly affecting the screen acceleration is
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不同类型水平弹簧组合刚度非线性吸振器的性能分析及稳定 ...
2022年9月5日 陈依林, 杜敬涛, 崔海健, 赵雨皓, 刘杨. 不同类型水平弹簧组合刚度非线性吸振器的性能分析及稳定性研究. 力学学报, 2023, 55 (1): 192-202. doi: 10.6052/0459-1879
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失谐整体叶盘多模态振动抑制的吸振器阵列方法 MISTUNED ...
2023年11月3日 Key words dynamic vibration absorber array, mistuned bladed disk, multi-mode vibration mitigation, power flow analysis 引 言 整体叶盘是新一代高性能航空发动机
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一种含放大机构的负刚度动力吸振器的参数优化 - cstam.cn
2018年11月9日 一种含放大机构的负刚度动力吸振器的参数优化 [J]. 力学学报, 2019, 51 (3): 894-903. doi: 10.6052/0459-1879-18-375. Citation: Zhaoyang Xing, Yongjun Shen,
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Dynamics of windscreen wiper blades: Squeal noise
2016年4月1日 Regarding the squeal noise occurring in windscreen wipers, different models have been developed. A simple one degree of freedom (dof) system has been proposed
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Reducing Vibratory Screen Structural Loading Using a Vibration Absorber ...
2001年1月1日 Reducing Vibratory Screen Structural Loading Using a Vibration Absorber - ScienceDirect Article preview Abstract Structural Engineering, Mechanics and
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Experimental investigations of a vibro-impact absorber
2022年11月15日 A modular vibro-impact absorber with tunable gap is designed to mitigate the vibrations of a beam. Efficiency for two modes is demonstrated experimentally for
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Virtual Vibration Absorbers with Inherent Damping
2012年5月23日 A robust control method of a hybrid vibration absorber for vibration suppression in a wide frequency band considering large structural parameter variations
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The development of a vibration absorber for vibrating screens
2006年12月20日 The experience gained from the experimental absorber was used to suggest how an absorber could be applied to a screen. An absorber isolating at 12.5 Hz
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Design and analysis of tuned vibrational absorber for a
2023年5月15日 The free vibration analysis is performed by plotting the time response and FFT plot. Further, the effectiveness of the absorber is analysed by plotting response of
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PRELIMINARYEXPERIMENTAL/NUMERICALSTUDYOFTHE ...
mainly reproduce the dynamic vibration absorber device by means of electrical components, typically resistive-inductive (R-L) circuits (Hollkamp, 1994). This kind of circuits is simple to design but its performance is based on the resonance tuning, so it is sensitive to variations of structural parameters.
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失谐整体叶盘多模态振动抑制的吸振器阵列方法 MISTUNED ...
2023年11月3日 Key words dynamic vibration absorber array, mistuned bladed disk, multi-mode vibration mitigation, power flow analysis 引 言 整体叶盘是新一代高性能航空发动机的关键部 件, 具有结构紧凑、重量轻和推重比高等优点, 代表 了高性能航空发动机的发展方向[1] ...
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(PDF) Dynamic Vibration Absorbers and its
2017年6月11日 Abstract and Figures. Vibration absorbers are mainly used in civil engineering structures, e.g. high-rise structures and bridges. High-rise structures will experience along-wind vibration and ...
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Experimental characterization and performance of dynamic vibration ...
2020年6月8日 Dynamic vibration absorber (DVA) is one of the ways to control the level of vibration. Among many mechanisms and control strategies of the DVA, passively tuned DVA emerges as one of the most effective absorbers due to its simple mechanism. However, the performance of the passive tuned DVA suffers from narrow suppression bandwidth. This
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Eliminating the Fluid-Induced Vibration and Improving the
2019年9月2日 A theoretical research on eliminating the instability vibration and improving the stability of the rotor/seal system using the inerter-based dynamic vibration absorber (IDVA) is presented in this paper. The modified Jeffcott rotor and Muszynska nonlinear seal force models are employed. The proposed IDVA is the damping element of the traditional
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Actuators Free Full-Text Vibration Isolation Performance
2022年4月15日 This study evaluates the vibration isolation performance of an adaptive magnetorheological elastomer (MRE)-based dynamic vibration absorber (MRE-DVA) for mitigating the high frequency vibrations (100–250 Hz) of target devices. A simple and effective MRE-DVA design was presented and its vibration isolation performance was
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Vibration absorber for windscreen frame of car - Google
The frame of the windscreen of a cabriolet type motor car is prevented from vibrating by a vibration absorber fitted inside the hollow upper cross member of the windscreen frame (3). The vibration absorber consists of a mass (2) which has each end attached by a tension spring (5,6) or by resilient thrust bearings to the windscreen frame.
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Dynamic Vibration Absorber with Negative Stiffness for
To suppress the vibration of a rotor system, a vibration absorber combining negative stiffness with positive stiffness together is proposed in this paper. Firstly, the negative stiffness producing mechanism using ring type permanent magnets is presented and the characteristics of the negative stiffness are analyzed. Then, the structure of the absorber
learn moreOptimizations of distributed dynamic vibration absorbers for ...
2018年8月15日 The dynamic vibration absorber (DVA) originally invented by Frahm 1 a century ago is an ideal device for vibration control at specific frequencies. Because of its simplicity, reliability and efficiency, the DVA is widely used to reduce the noise and vibration of rail vehicles, aircraft cabins and many other structures. 2,3 The vibration suppression
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Research on Damping and Vibration Absorption
2023年7月19日 A dynamic vibration absorber (DVA) is usually composed of the auxiliary mass, the spring and the damping. The parameters of the traditional passive DVA are constant, which can realize the vibration absorption at a specific frequency [1, 2].However, when the vibration source frequency is shifted, the vibration absorption effect will be
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Design and Experimental Implementation of a
2015年4月8日 This paper presents experimental and numerical results about the effectiveness of a beam-type twin dynamic vibration absorber for a cantilevered flexible structure carrying an unbalanced rotor. An
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Actuators Free Full-Text Vibration Isolation
2022年4月15日 This study evaluates the vibration isolation performance of an adaptive magnetorheological elastomer (MRE)-based dynamic vibration absorber (MRE-DVA) for mitigating the high frequency vibrations
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Vibration Free Full-Text Design Optimization of
The research is ongoing to understand if this concept of the vibration absorber is suitable for the attenuation of torsional vibrations in the drivetrain systems of heavy-duty trucks [9,10,20,21,22]. Another well-known design
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A pendulum-like tuned vibration absorber and its
2022年6月30日 Tuned vibration absorbers (TVAs), which were invented by Frahm in 1909 [1], have been widely used in suppressing un-desired vibrations because of their simple structure and obvi-ous effect in vibration control fields [2-6]. The TVA is a sin-gle-frequency vibration control device that only works within a narrow frequency range.
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Acoustics Free Full-Text One-Way Vibration Absorber - MDPI
2022年5月4日 A vibration absorber consisting of a one-dimensional waveguide with a reflectionless termination extracts vibrational energy from a structure that is to be damped. An optimum energy dissipation occurs for the so-called power adjustment, i.e, the same level of resistance and the opposite reactance of structure and absorber. The
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Dynamic Vibration Absorbers with Negative Stiffness and
2022年8月13日 The vibration energy of the active mass of the third absorber can be seen from Fig. 3d to be lower than the traditional, negative stiffness and inerter damper DVAs in the frequency range 450–900 Hz. In addition, the vibration energy of the active mass of the second absorber reaches a very sharp peak at 750 Hz.
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Novel inerter-based absorbers for suppressing beams vibration
2020年10月8日 The results show that this novel vibration absorber can reduce vibration 37% more than the optimized classical linear vibration absorbers. Some results give quasi-beating response for the beam possesses inerter-based vibration absorbers. Inerter-based vibration absorbers are new generations of tuned mass dampers. The property of the
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Passive, Adaptive and Active Tuned Vibration Absorbers—A
1995年6月1日 An overview of the recent development of tuned vibration absorbers (TVAs) for vibration and noise suppression is presented. The paper summarizes some popular theory for analysis and optimal tuning of these devices, discusses various design configurations, and presents some contemporary applications of passive TVAs.
learn moreAcoustics Free Full-Text One-Way Vibration Absorber - MDPI
2022年5月4日 A vibration absorber consisting of a one-dimensional waveguide with a reflectionless termination extracts vibrational energy from a structure that is to be damped. An optimum energy dissipation occurs for the so-called power adjustment, i.e, the same level of resistance and the opposite reactance of structure and absorber. The
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Design Considerations for Optimal Absorption of Energy from a Vibration ...
2016年4月1日 Dynamic vibration absorption is a passive technique for suppressing unintended vibrations. Optimal absorption of energy from a vibration source entails the determination of absorber parameters such as resonant frequency and damping. In the present work, we propose a method to obtain these parameters for a generic case of
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